About

Robbert-Jan Pos

Initiator and key point of contact within PackSense. Spent nine years in commercial roles at Optimum Group and was one of the first to actively embrace the shift toward sustainability—first internally, then for the group’s clients, and now for the wider market. Combines regulatory knowledge with practical insight and guides companies in making strategic packaging decisions.

We collaborate with:

• KIDV and Verpact
• Wageningen University & Research (WUR)
• University of Twente (TU)
• Fost Plus
• RecyClass

Our position within this network makes PackSense an effective bridge between policy, the supply chain, and practical application.

OK-List

Practical guidance in complex times

The OK List was developed in response to a growing problem: many companies want to improve the recyclability of their packaging right now but don’t know where to start. What are smart choices? What actually works? And what will soon be required?

Together with Ulphard Thoden van Velzen (WUR), PackSense created the OK List. The list originated from the InReP project and combines insights from practical research, recycling technology, and legislation. The result is a pragmatic guide—not a decision tree, but a clear overview of plastic packaging types that can be considered “OK” under both current and expected regulations.

The list helps you to:

• make better material choices from the design phase
• quickly assess whether existing packaging is future-proof
• guide internal discussions with clear, content-driven insights

The list does not replace official tools like the Recyclecheck, but complements them by providing quicker direction. It includes combinations of PE, PP, or PET with concrete examples of what is technically recyclable—if designed, labeled, and used correctly.

The OK List is a living document and is continuously updated.